Not to be pedantic but a person can in return also revoke their obligation to abide by these rules (like paying for food at the cashier or board a train without

Not to be pedantic but a person can in return also revoke their obligation to abide by these rules (like paying for food at the cashier or board a train without a ticket) at any time. So essentially there always exists a choice to not play by the rules if the regulators of this cashless society decide to cut you out